50450131531 has 2 divisors, whose sum is σ = 50450131532. Its totient is φ = 50450131530.

The previous prime is 50450131519. The next prime is 50450131559. The reversal of 50450131531 is 13513105405.

It is an a-pointer prime, because the next prime (50450131559) can be obtained adding 50450131531 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50450131531 - 2⁹ = 50450131019 is a prime.

It is a super-2 number, since 2×50450131531² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 50450131531.

It is not a weakly prime, because it can be changed into another prime (50450137531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25225065765 + 25225065766.

It is an arithmetic number, because the mean of its divisors is an integer number (25225065766).

Almost surely, 2^50450131531 is an apocalyptic number.

50450131531 is a deficient number, since it is larger than the sum of its proper divisors (1).

50450131531 is an equidigital number, since it uses as much as digits as its factorization.

50450131531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 28.

Adding to 50450131531 its reverse (13513105405), we get a palindrome (63963236936).

The spelling of 50450131531 in words is "fifty billion, four hundred fifty million, one hundred thirty-one thousand, five hundred thirty-one".